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Senior Application Security Architect 

Overview 

At JLL, we're reimagining how the world's most complex real estate environments are secured, operated, and experienced. The Application Security Architect is a senior individual contributor responsible for bridging application security engineering and enterprise security architecture at JLL.

This role designs and owns security architectures for application ecosystems, integrates security into the software development lifecycle (SDLC), and serves as a technical authority on secure design patterns, threat modeling, and DevSecOps practices. Operating at the Senior level, this position independently leads application security initiatives, mentors junior engineers and developers, and partners across engineering, architecture, and business teams to reduce risk and enable secure digital transformation. 

If you’re a strategic thinker with application security expertise who thrives in a large, dynamic environment and wants their work to have real, visible impact, we want to hear from you. 

Essential Duties and Responsibilities:

Security Architecture & Design 

• Design and maintain security architecture standards, policies, and patterns for enterprise applications, platforms, and cloud-native environments, ensuring alignment with JLL's technology strategy and risk posture. 
• Develop and enforce secure design patterns, reference architectures, and architecture decision records (ADRs) for application security across development teams. 
• Lead security architecture reviews for new and existing applications, evaluating designs against frameworks such as OWASP, NIST, and SANS. 
• Integrate zero-trust principles and defense-in-depth strategies into application architecture to reduce attack surface and support enterprise risk management goals. 

DevSecOps & Secure Development Lifecycle 

• Define and maintain a standardized set of enterprise application security requirements and produce metrics to report performance against those requirements. 
• Lead threat modeling sessions for new application features and system integrations, producing actionable remediation guidance for development teams. 
• Champion secure coding standards and developer security enablement programs in collaboration with platform and application engineering teams. 

Risk, Compliance & Stakeholder Engagement 

• Analyze complex security requirements across multiple technology domains and design comprehensive security solutions that address enterprise risk and regulatory compliance obligations. 
• Communicate security architecture designs, risk assessments, and remediation recommendations to technical and non-technical stakeholders across business units. 
• Coordinate security design reviews and approval processes, facilitating alignment between security, engineering, and enterprise architecture teams. 
• Contribute to JLL's application security strategy roadmap, identifying emerging threats and recommending enhancements to the secure development and architecture programs. 

Mentorship & Team Leadership 

• Provide technical guidance and mentoring to junior security engineers, developers, and architects on application security principles, secure coding practices, and architectural standards. 
• Lead cross-functional security initiatives, driving collaborative approaches to security integration across development and architecture teams. 
• Support secure development training and awareness programs to build security competency across engineering organizations. 

Required Knowledge, Skills, and Abilities:

Technical Knowledge 

• Comprehensive knowledge of application security methodologies, including OWASP Top 10, SANS/CWE, secure development frameworks, and security architecture design patterns. 
• Demonstrated experience designing security architectures for cloud-native environments (AWS, Azure, GCP), microservices, APIs, and containerized workloads. 
• Strong proficiency in DevSecOps practices and tooling: SAST, DAST, SCA, container image scanning, secrets management, and CI/CD security integration. 
• Experience with enterprise security frameworks including NIST CSF, NIST SP 800-53, ISO 27001, and zero-trust architecture principles. 
• Working knowledge of identity and access management (IAM), OAuth 2.0/OIDC, and application-layer authentication and authorization controls. 
• Understanding of cryptography, data protection, encryption, and Public Key Infrastructure 
• Familiarity with threat modeling methodologies (STRIDE, PASTA, or equivalent) and their application to complex distributed application architectures. 
• Knowledge of OWASP: GenAi, LLM Top 10, Security Exchange, Ai Exchange a plus 

Skills & Abilities 

• Ability to analyze complex application architectures and translate security requirements into practical, implementable design solutions. 
• Strong communication skills with the ability to convey technical security risks and architectural recommendations to diverse stakeholders including development teams, business leaders, and enterprise architects. 
• Demonstrated ability to lead security assessments, architecture reviews, and cross-functional security initiatives independently. 
• Proven capability to mentor and guide junior security professionals and developers on secure design practices and security engineering standards. 
• Analytical and problem-solving skills applied to sophisticated security integration challenges with enterprise-wide implications. 
• Ability to balance security rigor with development velocity, enabling secure delivery of digital applications and services. 

Education & Experience 

• Bachelor's degree in Computer Science, Information Security, Software Engineering, or a related field; equivalent experience considered. 
• 7+ years of experience in information security with a focus on application security engineering, secure software development, or security architecture. 
• Relevant certifications preferred: CSSLP, CISSP, AWS/Azure Security Specialty, OSCP, or equivalent application security or architecture credentials. 

Location:

If this job description resonates with you, we encourage you to apply even if you don’t meet all of the requirements.  We’re interested in getting to know you and what you bring to the table!

At JLL, we harness the power of artificial intelligence (AI) to efficiently accelerate meaningful connections between candidates and opportunities. Using AI capabilities, we analyze your application for relevant skills, experiences, and qualifications to generate valuable insights about how your unique profile aligns with the specific requirements of the role you're pursuing.

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Jones Lang LaSalle (“JLL”) is an Equal Opportunity Employer and is committed to working with and providing reasonable accommodations to individuals with disabilities.  If you need a reasonable accommodation because of a disability for any part of the employment process – including the online application and/or overall selection process – you may email us at HRSCLeaves@jll.com. This email is only to request an accommodation. Please direct any other general recruiting inquiries to our Contact Us page > I want to work for JLL.